Physics
Physics, 14.01.2020 04:31, Roquelle6301

If the splash is heard 1.17 seconds later, what was the initial speed of the rock? take the speed of sound in the air to be 343 m/s.|v0|=nothingm/s.

answer
Answers: 3

Other questions on the subject: Physics

image
Physics, 22.06.2019 07:10, cannan
Search coils and credit cards. one practical way to measure magnetic field strength uses a small, closely wound coil called a search coil. the coil is initially held with its plane perpendicular to a magnetic field. the coil is then either quickly rotated a quarter-turn about a diameter or quickly pulled out of the field. (a) derive the equation relating the total charge q that flows through a search coil to the magnetic-field magnitude b. the search coil has n turns, each with area a, and the flux through the coil is decreased from its initial maximum value to zero in a time ∆t. the resistance of the coil is r, and the total charge is q = i∆t, where i is the average current induced by the change in flux. (b) in a credit card reader, the magnetic strip on the back of a credit card is rapidly “swiped” past a coil within the reader. explain, using the same ideas that underlie the operation of a search coil, how the reader can decode the information stored in the pattern of magnetization on the strip. (c) is it necessary that the credit card be “swiped” through the reader at exactly the right speed? why or why not?
Answers: 2
image
Physics, 22.06.2019 16:10, estefaniapenalo
To a of 4 x hz is 1. 0. mm nm nm
Answers: 1
image
Physics, 22.06.2019 18:30, lilypup004
Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.
Answers: 1
image
Physics, 22.06.2019 22:00, crystalclear99
Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?
Answers: 1
Do you know the correct answer?
If the splash is heard 1.17 seconds later, what was the initial speed of the rock? take the speed o...

Questions in other subjects: